linux-kernel - [RFC][PATCH v5 14/51] objtool: mcount: Move get

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Message-ID: <8c3b95adbd58e26c7b09e4d0c7e59acb25b69054.1592510545.git.mhelsley@vmware.com>
Date:   Thu, 18 Jun 2020 13:38:00 -0700
From:   Matt Helsley <mhelsley@...are.com>
To:     <linux-kernel@...r.kernel.org>
CC:     Josh Poimboeuf <jpoimboe@...hat.com>,
        Peter Zijlstra <peterz@...radead.org>,
        Steven Rostedt <rostedt@...dmis.org>,
        Julien Thierry <jthierry@...hat.com>,
        Kamalesh Babulal <kamalesh@...ux.vnet.ibm.com>,
        Matt Helsley <mhelsley@...are.com>
Subject: [RFC][PATCH v5 14/51] objtool: mcount: Move get_mcountsym

Now that it's been stripped of using the old recordmcount ELF
wrapper get_mcountsym() is ready to be promoted out of the
double-included wrapper header.

Signed-off-by: Matt Helsley <mhelsley@...are.com>
---
 tools/objtool/recordmcount.c | 16 ++++++++++++++++
 tools/objtool/recordmcount.h | 19 -------------------
 2 files changed, 16 insertions(+), 19 deletions(-)

diff --git a/tools/objtool/recordmcount.c b/tools/objtool/recordmcount.c
index dafa6dd10d04..d5f7c06afd57 100644
--- a/tools/objtool/recordmcount.c
+++ b/tools/objtool/recordmcount.c
@@ -422,6 +422,22 @@ static int is_mcounted_section_name(char const *const txtname)
 		strcmp(".cpuidle.text", txtname) == 0;
 }
 
+static struct symbol *get_mcountsym(struct reloc *reloc)
+{
+	struct symbol *sym = reloc->sym;
+	char const *symname = sym->name;
+	char const *mcount = gpfx == '_' ? "_mcount" : "mcount";
+	char const *fentry = "__fentry__";
+
+	if (symname[0] == '.')
+		++symname;  /* ppc64 hack */
+	if (strcmp(mcount, symname) == 0 ||
+	    (altmcount && strcmp(altmcount, symname) == 0) ||
+	    (strcmp(fentry, symname) == 0))
+		return sym;
+	return NULL;
+}
+
 static const unsigned int missing_sym = (unsigned int)-1;
 
 /* 32 bit and 64 bit are very similar */
diff --git a/tools/objtool/recordmcount.h b/tools/objtool/recordmcount.h
index 6ac120aa45af..210899819261 100644
--- a/tools/objtool/recordmcount.h
+++ b/tools/objtool/recordmcount.h
@@ -27,7 +27,6 @@
 #undef find_section_sym_index
 #undef has_rel_mcount
 #undef tot_relsize
-#undef get_mcountsym
 #undef get_shnum
 #undef set_shnum
 #undef get_shstrndx
@@ -56,7 +55,6 @@
 # define set_shnum		set_shnum64
 # define get_shstrndx		get_shstrndx64
 # define do_func		do64
-# define get_mcountsym		get_mcountsym_64
 # define is_fake_mcount		is_fake_mcount64
 # define fn_is_fake_mcount	fn_is_fake_mcount64
 # define MIPS_is_fake_mcount	MIPS64_is_fake_mcount
@@ -84,7 +82,6 @@
 # define set_shnum		set_shnum32
 # define get_shstrndx		get_shstrndx32
 # define do_func		do32
-# define get_mcountsym		get_mcountsym_32
 # define is_fake_mcount		is_fake_mcount32
 # define fn_is_fake_mcount	fn_is_fake_mcount32
 # define MIPS_is_fake_mcount	MIPS32_is_fake_mcount
@@ -271,22 +268,6 @@ static int append_func(Elf_Ehdr *const ehdr,
 	return elf_write(lf);
 }
 
-static struct symbol *get_mcountsym(struct reloc *reloc)
-{
-	struct symbol *sym = reloc->sym;
-	char const *symname = sym->name;
-	char const *mcount = gpfx == '_' ? "_mcount" : "mcount";
-	char const *fentry = "__fentry__";
-
-	if (symname[0] == '.')
-		++symname;  /* ppc64 hack */
-	if (strcmp(mcount, symname) == 0 ||
-	    (altmcount && strcmp(altmcount, symname) == 0) ||
-	    (strcmp(fentry, symname) == 0))
-		return sym;
-	return NULL;
-}
-
 /*
  * Look at the relocations in order to find the calls to mcount.
  * Accumulate the section offsets that are found, and their relocation info,
-- 
2.20.1